i wouldn't
adding a sub was probably the best thing i did to my car
technics harness with LOC is about $140
well worth it
plus, they are easy to sell when you get rid of your car
and they retain their value well
so you won't lose much when you sell it
and easy as pie to install/uninstall

+1

I dont have the harness, but I have the LC2i for sale. 50 bucks and its yours.